[U-Boot] [PATCH] serial: s5p: set automatically clears after resetting Rx FIFO
Lukasz Majewski
l.majewski at samsung.com
Tue Feb 4 07:33:14 CET 2014
Hi Inha,
> This patch fix the u-boot shell problem on TRATS2 board.
> - If hold the key while booting is in progress,
> white spaces are written in u-boot shell.
>
> Set Automatically clears after resetting Rx FIFO.
Acked-by: Lukasz Majewski <l.majewski at samsung.com>
Tested-by: Lukasz Majewski <l.majewski at samsung.com>
>
> Signed-off-by: Inha Song <ideal.song at samsung.com>
> Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
> ---
> drivers/serial/serial_s5p.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
> index 89f5d68..98c62b4 100644
> --- a/drivers/serial/serial_s5p.c
> +++ b/drivers/serial/serial_s5p.c
> @@ -100,8 +100,8 @@ static int serial_init_dev(const int dev_index)
> {
> struct s5p_uart *const uart = s5p_get_base_uart(dev_index);
>
> - /* enable FIFOs */
> - writel(0x1, &uart->ufcon);
> + /* enable FIFOs, auto clear Rx FIFO */
> + writel(0x3, &uart->ufcon);
> writel(0, &uart->umcon);
> /* 8N1 */
> writel(0x3, &uart->ulcon);
--
Best regards,
Lukasz Majewski
Samsung R&D Institute Poland (SRPOL) | Linux Platform Group
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